Aiming at the low output flow of the valveless piezoelectric pump with triangular prism bluff body,a valveless piezoelec-tric pump with arrow-shaped bluff body was designed based on the low flow resistance characteristic of the arrow structure,and the structure and working principle of this pump were introduced.The velocity streamline diagram of the valveless piezoelectric pump with arrow-shaped bluff body was simulated by finite element software,and the resistance characteristic of this pump was com-pared with that of the valveless piezoelectric pump with triangular prism bluff body.The results show that the valveless piezoelec-tric pump with arrow-shaped bluff body can transport fluids in one direction,and its efficiency is 19.51％higher than that of the valveless piezoelectric pump with triangular prism bluff body.A 3D printer was used to produce pump prototypes,and the flow rate and pressure difference tests were carried out.The tests results show that under the driving voltage of 300 V,the maximum flow rate and pressure difference of the valveless piezoelectric pump with arrow-shaped bluff body are 17.40 g/min and 470 Pa,which are 22.71％and 37.03％higher than those of the valveless piezoelectric pump with triangular prism bluff body,respectively.
维普
万方数据